| EX21 | Heater and air conditioning controls |
| G107 | Sunlight penetration photosensor |
| G151 | Right vent temperature sender |
| J126 | Fresh air blower control unit |
| J255 | Climatronic control unit |
| SC | Fuse holder C |
| SC7 | Fuse 7 on fuse holder C |
| SC14 | Fuse 14 on fuse holder C |
| SC34 | Fuse 34 on fuse holder C |
| T2dp | 2-pin connector, black |
| T2dq | 2-pin connector, black |
| T2dr | 2-pin connector, black |
| T4dc | 4-pin connector, black |
| T6ch | 6-pin connector, black |
| T17e | 17-pin connector, brown |
| T17m | 17-pin connector, brown |
| T20d | 20-pin connector, black |
| TIUL | Coupling point in interior, below left |
| V2 | Fresh air blower |
| 244 | Earth connection (sender earth), in Climatronic wiring harness |
| 278 | Earth connection 4, in interior wiring harness |
| 638 | Earth point, on right A-pillar |
| 810 | Earth point on central tube for dash panel, centre left |
| A38 | Positive connection 2 (15a) in dash panel wiring harness |
| A164 | Positive connection 2 (30a) in dash panel wiring harness |
| EX21 | Heater and air conditioning controls |
| G150 | Left vent temperature sender |
| G238 | Air quality sensor |
| G805 | Pressure sender for refrigerant circuit |
| J255 | Climatronic control unit |
| J533 | Data bus diagnostic interface |
| N280 | Air conditioner compressor regulating valve |
| T2do | 2-pin connector, black |
| T2ds | 2-pin connector, black |
| T3as | 3-pin connector, black |
| T3ck | 3-pin connector, black |
| T4dd | 4-pin connector, black |
| T4de | 4-pin connector, black |
| T8as | 8-pin connector, black |
| T8at | 8-pin connector, black |
| T17f | 17-pin connector, red |
| T17n | 17-pin connector, red |
| T20 | 20-pin connector, red |
| T20d | 20-pin connector, black |
| TIUL | Coupling point in interior, below left |
| TML | Coupling point in engine compartment, left |
| 131 | Earth connection 2, in engine compartment wiring harness |
| 179 | Earth connection, in left headlight wiring harness |
| 244 | Earth connection (sender earth), in Climatronic wiring harness |
| 317 | Earth connection 7, in engine compartment wiring harness |
| 673 | Earth point 3, on front of left longitudinal member |
| A209 | Connection 1 (LIN bus) in dash panel wiring harness |
| B398 | Connection 2 (convenience CAN bus, high), in main wiring harness |
| B407 | Connection 2 (convenience CAN bus, low), in main wiring harness |
| B506 | Connection (convenience CAN bus, high), in interior wiring harness |
| B507 | Connection (convenience CAN bus, low), in interior wiring harness |
| B710 | Connection 5 (LIN bus) in main wiring harness |
| U26 | Connection (15), in gearbox switch wiring harness |
| * | Only models with 1.4l engine |
| *2 | According to equipment |
| EX21 | Heater and air conditioning controls |
| G642 | Potentiometer for front air distribution flap control motor |
| G644 | Potentiometer for fresh air/air recirculation, air flow flap control motor |
| J255 | Climatronic control unit |
| T6n | 6-pin connector, blue |
| T6r | 6-pin connector, blue |
| T16c | 16-pin connector, black |
| T16d | 16-pin connector, black |
| V425 | Fresh air/air recirculation, air flow flap control motor |
| V426 | Front air distribution flap control motor |
| L7 | Connection 3, in evaporator housing unit wiring harness |
| L8 | Connection 4, in evaporator housing unit wiring harness |
| * | According to equipment |
| EX21 | Heater and air conditioning controls |
| G135 | Potentiometer for defroster flap control motor |
| G220 | Potentiometer for left temperature flap control motor |
| G221 | Potentiometer for right temperature flap control motor |
| J255 | Climatronic control unit |
| T6p | 6-pin connector, blue |
| T6q | 6-pin connector, blue |
| T6u | 6-pin connector, blue |
| T16c | 16-pin connector, black |
| T16d | 16-pin connector, black |
| V107 | Defroster flap control motor |
| V158 | Left temperature flap control motor |
| V159 | Right temperature flap control motor |
| L7 | Connection 3, in evaporator housing unit wiring harness |
| L8 | Connection 4, in evaporator housing unit wiring harness |
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